Cape Coral's Impervious Surface Limit: One Allowance, Four Surfaces
Updated: Oct 15
A Cape Coral lot gives you one number to spend on hard surfaces, and four or five things competing for it: the house, the driveway, the walkways, the patio or pool deck. Most owners find this out late, when the driveway has already been drawn wide and the pool deck has to shrink to fit. The number is published and specific, and it sits on a two-page city form almost nobody outside a permit counter has read.
The number: 60 percent, and a form that tests it tighter
Cape Coral's Impervious Surface Calculation Sheet, revised 10/25/2021, prints the limit in one sentence:
“Article 4, Table 4.1.3.B of the LDC requires that no greater than 60% of the surface area of property in R-1 or RML (Residential multi-family low) zoning districts is covered with impervious surfaces.”
The form's own arithmetic line states the test a little differently:
“Impervious Calculation: total sq. ft. of impervious surface / sq. ft. Total Lot Area = (must be less than 0.60)”
Both are printed on the same document — a 60 percent ceiling in the prose, a result below 0.60 in the calculation. We reproduce them as printed rather than reconciling them for the city. Practically: do not design to exactly 60.0 percent.
One named absence, because it matters: the sheet names R-1 and RML and nothing else. It says nothing about any other Cape Coral zoning district.
When the city asks for it
The sheet calls itself “a necessary attachment for all Cape Coral building permit applications” in those two districts where the work changes how much of the property is covered. So it is not a new-construction document only — a driveway widening, a patio extension, a detached garage or a pool deck on an existing house all trip the same trigger. Buying a lot rather than building on one you own, coverage belongs with the other things worth settling first — see what to check on a Cape Coral lot before you build.
The definition is wider than most people assume
The form defines the term twice, identically: “any hard surface that prevents or restricts the flow of water into the soil.” Under the heading “Impervious Surfaces (count towards 60% maximum surface area)”, it lists:
“Rooftops of any building (house, shed, or greenhouse) unless directed to a collection system as detailed below”
“Sidewalks/walkways, parking lots, or roads”
“Any driveway, regardless of method of material (asphalt/concrete, gravel, shell, or pavers)”
“Gravel or lava rock landscaping, field stones, or any other stone surface”
“Sand-set concrete pavers (i.e. typical paver installation)”
“Surface area of pool decks that slope away from the pool, if not collected in an in-ground exfiltration system”
The driveway line is deliberately material-blind — “regardless of method of material” — so a shell driveway counts exactly as much as a poured one, and decorative rock around the foundation is coverage rather than landscaping as far as this calculation is concerned.
And the parenthetical on the paver line is the city's own: sand-set concrete pavers are the typical installation, and they count at full area. Pavers look porous and the joints are sand, which is exactly why plans go wrong here.
Pervious paver block is accepted everywhere except the one place people want it
There is a genuinely pervious product, and the form carves out its most popular use. Under “Pervious Surfaces (do not count towards 60% maximum surface area)”, item five reads:
“Pervious paver block with pervious subgrade as approved by the Public Works Director.”
The form explains it as “one with a mostly open design where grass can grow in between the narrower sections of brick”, then states the carve-out: “This system is acceptable for use in any area except for a driveway.” With the reason given on the form itself — “over time the pervious subgrade on a driveway becomes compacted and loses its ability to percolate”.
Worth knowing before anyone buys material. General guidance on impervious limits routinely suggests permeable paving as the way to get a driveway off the calculation. In these districts the city's own form says the driveway is the one place it does not work.
The pool is pervious. The pool deck depends on which way it drains.
This is the part of the form that changes a design. First the counter-intuitive one, pervious item one: “The surface area of swimming pools, hot tubs, or above-ground wood decks;” The pool's water surface does not count against you.
The deck around it is where the decision lives, because the same pool deck appears on both lists, separated only by slope and drainage. It is impervious if it slopes away from the pool and the runoff is “not collected in an in-ground exfiltration system”. It is pervious in two cases:
“The surface areas of pool decks that slope inwards (drain) into the pool;”
“The surface areas of pool decks that slope away from the pool with a drain system at the base of the wall which allows immediate percolation of the pool deck runoff;”
So a pool deck of identical size and identical material can count fully against the 60 percent or not count at all, depending on a drainage decision made on the plans. That is a design choice — not a material choice and not a cost choice.
It is the best argument for settling the pool, the deck and the cage together rather than in sequence. The enclosure over that deck is its own permit — see the Cape Coral pool cage and screen enclosure permit — and the sun angle on it is a separate question again, in which direction a Cape Coral house should face.
Getting the roof off the calculation takes a sealed plan
The roof is the largest surface on most lots, and the form does allow it to be excluded — as the most heavily conditioned item on the list. Gutters and downspouts installed, roof water directed into a designed in-ground exfiltration system that percolates below grade, and then:
“Signed and sealed plans from a Florida-Registered Professional Engineer or Architect shall be included with the permit application and contain the details and certification of the system”
That is a design cost and a submittal item, decided before the application goes in. Note too that the form routes two kinds of relief to two different people: the Public Works Director approves pervious paver block and “Site specific alternate drainage or pervious system designs”, while a Florida-Registered Professional Engineer or Architect signs and seals the exfiltration plans. Neither substitutes for the other.
The eleven lines on the form, and why the order you decide them in matters
The worksheet is a table. You enter the total lot area, then the dimensions and area of each of these, exactly as the form labels them:
“Proposed or Existing House (include steps/landing)”
“Proposed Addition”
“Proposed Accessory Building or Garage”
“Existing Garage”
“Existing Accessory Building 1”
“Existing Accessory Building 2”
“Sidewalks or Walkways (Include pavers)”
“Patio(s) (Include pavers)”
“Driveway (Include curbing and any gravel/shell surfaced areas)”
“Recreational Area (basketball court, tennis court, etc.)”
“Other”
Read that as a budget rather than a form. The house footprint is the largest line and is settled first, the garage with it. Everything below those two competes for the remainder, and whichever gets drawn last gets what is left.
A wide circular drive and a generous pool deck are not independent choices on a Cape Coral lot. They are two claims on one allowance — which is why this belongs in the conversation before the architect starts, not at permit submittal.
Note too that the driveway line explicitly includes curbing, and the walkway and patio lines include pavers — the three places a casual calculation comes in low. Lux Development Group builds custom homes in Cape Coral, and the completed work is collected on our projects page.
The one line that exempts a lot entirely
Pervious item seven is the shortest on the form and the only one with no condition, no engineer requirement and no director approval attached:
“Lots in platted subdivisions where there is an approved master stormwater system.”
Confirm it for your parcel rather than assuming either way, because much of Cape Coral's older residential platting predates the kind of system that line contemplates.
The only consequence the form states is removal
The applicant signs a certification, and this is the sentence above the signature:
“I understand that providing incorrect information may result in the need to remove impervious surfaces if it is discovered that the maximum coverage has been exceeded.”
There is no fine on this form. No penalty schedule, no citation process, no enforcement mechanism and no variance procedure appears anywhere on either page — we looked for each of them. The stated remedy is that the surface comes out.
Which is expensive late: a coverage problem found at final inspection is a demolition problem rather than a drawing revision. The city publishes its own taxonomy of inspection failures — see why Cape Coral inspections fail. Permit review timing is its own subject again — see the Lee County building permit timeline — but no review timeline helps a plan that has to be redrawn.
There is also an undated agreement the city posts, and it is not a plan
Among the city's miscellaneous permit documents sits a one-page owner agreement dealing with this cap. Its printed title is simply AGREEMENT, under City of Cape Coral, Department of Community Development, with a blank line for a permit number and no form number. Under it the owner asks the city to issue a building permit “without requiring compliance with the maximum lot coverage of impervious surfaces”, citing “Table 4.1.3.B, Zoning District Dimensional Standards, of the Land Development Code (LDC)” and the standard that “no more than 60% of the lot area consist of impervious surfaces”.
What it trades is the permit for the certificate of occupancy. Under its own terms “the issuance of a certificate of occupancy may be delayed”; compliance must still be met before that certificate issues if the Table is not repealed; and the owner indemnifies the city against “any and all claims for damages”, expressly “including damages for delay”, arising from “the City's inability to issue a Certificate of Occupancy for the property”. It takes the owner's signature and a notary acknowledgment in Lee County, and carries no engineer's seal or city review line.
And the thing that has to be said plainly: the document carries no printed date anywhere — no revision stamp, no effective date, no adoption date, in header, footer or margin. The only date fields are blanks for the signer and the notary. Nothing on its face establishes whether it is current practice, so confirm its status with the Department of Community Development before giving it any weight.
Our own position: it is not a route to design around. A permit you can pull and a certificate of occupancy you cannot get is a worse problem than a narrower driveway.
One naming point, because the file name invites the error: the document contains no 40 percent figure anywhere, and the only percentage printed on it is 60. There is no “60-40 rule”.
The 60 percent is not the last word: the code publishes a route past it
Everything above comes off one city form, and that form says nothing about relief. The silence is the form's, not the city's. Relief sits in the Land Development Code, in the section that lets the city grant small departures from its own dimensional standards, reprinted inside a nine-page application packet from the City Planning Division that carries the stamp Last revised_7/9/2026 on eight of its nine pages. Its purpose clause is one sentence — “To grant relief from strict application of LDC requirements to allow minor deviations.” — and its scope clause lists seven things a deviation may be granted for. The sixth is this one:
“6. Maximum lot coverage of impervious surfaces. Up to a 10% increase in the maximum percentage of lot coverage by impervious surfaces, provided the applicant submits calculations by a Florida Registered Professional Engineer”
Those calculations have to show that the conveyance system for the contributing drainage basin can carry the extra water — the packet's checklist puts it as “additional stormwater run-off from greater than 60% impervious” — and the regulations offer a second route: an owner “may also add retention storage” on site to compensate instead. Either way the approval lands before the permit, not with it:
“All such calculations and drainage plans must be approved by the City Public Works Department prior to issuance of any building permits.”
The fee is printed and cited: “FEE: Per City Code of Ordinances, Section 5-4(a)(1)a., a $55.00 application due at time of submittal.” The same paragraph adds that after approval the applicant may have to pay the city to “electronically record the final signed Resolution or Ordinance with the Lee County Clerk of Court” — an approved deviation becomes a recorded instrument. And the regulations are explicit about the other outcome: “If an Administrative Deviation is not approved, the applicant may subsequently apply for a Variance.”
Four absences, as useful here as the text. The regulations name no decision-maker for the section generally — a Director appears only in its boat-canopy subsection. They state no public-hearing requirement. There is no list of standards a deviation may not be applied to. And the two instruments never cite each other: Table 4.1.3.B, which the city's own undated agreement quotes, appears nowhere in this packet, and neither does 4.1.3 in any form. The 60 percent figure is the only thing linking them.
And one thing the packet does not settle: “a 10% increase in the maximum percentage” does not say whether that is ten percentage points, taking 60 to 70, or ten percent of the sixty, taking it to 66. The checklist's “Maximum Lot coverage of Impervious Surface up to 10 percent” does not settle it either. Confirm which with the City Planning Division before it reaches a drawing.
Two practical notes. This is an application that can be refused, not an allowance to design around: the planning assumption stays 60 percent, and the deviation is what you ask for when a particular site cannot meet it and an engineer can show the basin will take the water. And since Public Works approval has to land before permit issuance, coverage is a question to settle before the drawings go in — what the city charges when an approved plan set has to change afterwards is a separate process with its own form and fee ladder, set out in what happens when approved Cape Coral plans change. Nothing in either document says a deviation requires a revision.
One citation oddity, recorded rather than resolved: the packet tells an applicant to identify “the sub section of the LDC, Article 5, Section 5.8.11.”, while the regulations at its back are “Section 3.3.6.” and its own parking checklist cites “LDC, Article 3, Section 3.3.6.” Both numbers appear here as the document prints them.
Frequently asked questions
How much of my Cape Coral lot can be covered?
In the R-1 and RML districts, the city's Impervious Surface Calculation Sheet (revised 10/25/2021) cites Article 4, Table 4.1.3.B of the LDC for a maximum of 60 percent impervious coverage. The form's calculation line asks for a result that “must be less than 0.60”. The sheet names no other district.
Does my driveway count toward the limit?
Yes, and the material does not matter. The form lists “Any driveway, regardless of method of material (asphalt/concrete, gravel, shell, or pavers)” as impervious, and the worksheet line says to include the curbing and any gravel or shell surfaced areas.
Do pavers count as impervious in Cape Coral?
Sand-set concrete pavers do — the form lists “Sand-set concrete pavers (i.e. typical paver installation)” as impervious. Pervious paver block, the open design grass grows through over a pervious subgrade as approved by the Public Works Director, does not count — except on a driveway.
Can I use permeable pavers on my driveway to get under the limit?
Not in these districts, per the form. It says the pervious paver block system “is acceptable for use in any area except for a driveway”, and gives the reason: “over time the pervious subgrade on a driveway becomes compacted and loses its ability to percolate”.
Does the swimming pool itself count against the 60 percent?
No. The form's first pervious item is “The surface area of swimming pools, hot tubs, or above-ground wood decks”. The water surface is excluded. It is the deck around it that has to be decided.
Does my pool deck count toward the 60 percent?
It depends on how it drains, and this is the one genuine design lever on the form. A deck sloping away from the pool counts as impervious if the runoff is not collected in an in-ground exfiltration system. One sloping inward into the pool does not count, and neither does one sloping away with a drain at the base of the wall allowing immediate percolation. Same deck, same material, different answer.
Does the lanai count?
The form does not use the word “lanai” at all, which is worth saying plainly rather than guessing around. Its lines capture the surfaces instead: a roofed lanai falls on the “Proposed or Existing House” line, an open paved area on “Patio(s) (Include pavers)” or as pool deck.
Can I get the roof excluded from the calculation?
The form allows it, with conditions: gutters and downspouts installed, roof water directed into a designed in-ground exfiltration system percolating below grade, and “Signed and sealed plans from a Florida-Registered Professional Engineer or Architect shall be included with the permit application”.
What happens if I exceed the limit?
Removal is the only consequence stated on the form. The applicant certifies: “I understand that providing incorrect information may result in the need to remove impervious surfaces if it is discovered that the maximum coverage has been exceeded”. No fine, penalty schedule or enforcement process appears on either page.
Is there a variance from the 60 percent?
Not on this form, and the distinction is the point: the Impervious Surface Calculation Sheet contains no variance, waiver, deviation or appeal process, and none of those words appears on it. The Public Works Director approvals and the engineer-certified exfiltration system are routes to having a surface classified as pervious; they are not permission to exceed 60 percent. The relief is a different instrument — the Land Development Code's Administrative Deviation, Section 3.3.6, which lists maximum lot coverage of impervious surfaces among the things it may be granted for, and which is set out earlier on this page.
Can you exceed the 60 percent impervious limit in Cape Coral?
Not by designing past it, but there is relief to apply for. The Land Development Code's Administrative Deviation lists “Maximum lot coverage of impervious surfaces. Up to a 10% increase in the maximum percentage” among the things it may be granted for, on calculations by a Florida Registered Professional Engineer and City Public Works approval before any building permit issues. It can be refused; if it is not approved, the applicant “may subsequently apply for a Variance.”
What does a Cape Coral administrative deviation cost?
The application prints “FEE: Per City Code of Ordinances, Section 5-4(a)(1)a., a $55.00 application due at time of submittal.” on a packet stamped Last revised_7/9/2026 on eight of its nine pages. The engineer's drainage calculations are a separate cost and the packet does not price them.
Who approves an administrative deviation, and is there a public hearing?
The packet does not say. It names no decision-maker for Section 3.3.6 generally — a Director appears only in its boat-canopy subsection — and it states no public-hearing requirement, only that “A deviation shall take effect upon approval.” Confirm with the City Planning Division.
Who do I ask — the city or an engineer?
Both, for different things. The Public Works Director approves pervious paver block and site-specific alternate drainage or pervious system designs; a Florida-Registered Professional Engineer or Architect signs and seals the exfiltration plans.
Sources
Quotations on this page are taken from the City of Cape Coral Impervious Surface Calculation Sheet, revised 10/25/2021; from the city's undated one-page owner agreement concerning maximum lot coverage of impervious surfaces; and from the City Planning Division's Administrative Deviations application, stamped Last revised_7/9/2026 on eight of its nine pages, which reprints Section 3.3.6 of the Land Development Code. Confirm current requirements with the City of Cape Coral Department of Development Services for a specific parcel.
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